SR-OS: recreate VLAN sap-id from interface name

The interface name is also used as port name in VLAN definition, so
we have to strip the 'eth-' prefix there as well.

Author: ipspace

netsim/ansible/templates/vlan/sros.j2

@@ -23,6 +23,7 @@ updates:
 {%  endif %}
 {% if l.type in ['vlan_member','lan'] %}
 {% set sap_id = l.ifname.replace("c1/","") if 'ixr' in clab.type and 'ixr-x' not in clab.type else l.ifname %}
+{% set sap_id = sap_id.replace("eth-","") %}
    sap:
    - sap-id: {{ sap_id if ':' in sap_id else (sap_id+"/1"+(":0" if native else "")) }}
 {%  if native %}